Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao toan chi snippets" » "bao toan chi snippets", "ngoc toan chi snippets", "nao thanh chi snippets", "nao toan cao snippets", "nao tai chi snippets", "nao luan chi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nao toan chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao toan chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao toan chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao toan chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.